Catalyst for ethylbenzene dehydrogenation-hydroxide reaction

A hydrogen oxidation reaction and ethylbenzene dehydrogenation technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, hydrocarbons, etc., can solve low oxygen conversion rate and aromatics oxidation selectivity advanced questions

Active Publication Date: 2007-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing ethylbenzene dehydrogenation-hydrogenation catalyst has low oxygen conversion rate and high selectivity of aromatics oxidation in the ethylbenzene dehydrogenation-hydrogenation reaction, and provides a new Catalysts for dehydrogenation-hydrogenation of ethylbenzene

Method used

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  • Catalyst for ethylbenzene dehydrogenation-hydroxide reaction
  • Catalyst for ethylbenzene dehydrogenation-hydroxide reaction
  • Catalyst for ethylbenzene dehydrogenation-hydroxide reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 0.536 g of chloroplatinic acid, 0.347 g of tin chloride, 2.532 g of cerium nitrate and 0.926 g of lithium nitrate in 40 ml of deionized water to prepare an impregnation solution; 5 mm cylindrical α-Al 2 o 3 Put the carrier into a rotatable container, add the impregnating solution, keep the internal temperature of the container at 70-80°C, and dip while rolling until the impregnating solution disappears completely; take it out and put it in an oven, and dry it in the air at 80°C for 4 hours; take it out Put it into a calcination furnace, and calcine it in air at 550° C. for 4 hours to obtain a finished hydrogen oxidation catalyst.

Embodiment 2

[0032] The catalyst was prepared according to the method of Example 1, except that the active precursor was 0.027 gram of chloroplatinic acid, 0.035 gram of tin chloride, 0.253 gram of cerium nitrate and 0.046 gram of lithium nitrate.

Embodiment 3

[0034] Prepare catalyst according to the method for embodiment 1, difference is that active precursor adopts 0.536 gram chloroplatinic acid, 0.868 gram tin chloride, 25.316 gram cerium nitrate and 4.631 gram lithium nitrate.

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Abstract

The invention relates to a catalyst used to hydroxide in the ammonium hydroxide process of ethylbenzene. Wherein, it adds rare-earth element into platinum and tin system, to improve the hydrogen transfer rate and the selectivity of aromatic hydrocarbons.

Description

technical field [0001] The invention relates to a catalyst for ethylbenzene dehydrogenation-hydrogenation reaction. Background technique [0002] Styrene is an important basic organic raw material, mainly used in the production of materials such as PS, ABS, SBR, SMA, etc. These materials have important uses in industrial fields such as automobile manufacturing, household appliances, textiles, and building materials. At present, there are three production methods of styrene in the world: catalytic dehydrogenation of ethylbenzene, cogeneration of styrene-propylene oxide, and oxidative dehydrogenation of ethylbenzene. Among them, the catalytic dehydrogenation of ethylbenzene is the main production method of styrene, accounting for about 90% of the production capacity of styrene. [0003] The dehydrogenation of ethylbenzene to styrene is an endothermic reaction in which the number of molecules increases, from a thermodynamic point of view. Reduc...

Claims

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Application Information

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IPC IPC(8): B01J23/63C07C5/333C07C15/46
Inventor 邬时海谢在库缪长喜张惠明程远琳
Owner CHINA PETROLEUM & CHEM CORP
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